Problems upgrading to macOS Mojave on MacBook Pro 2018

As macOS Mojave was released today, I thought I would try to upgrade my 15" MacBook Pro 2018 to the latest software. However, when I'm running the installer, after around 2-3 minutes I get an error message that a problem has occurred, with no solution in sight. I have tried to reboot, turn it on and off, updated without internet etc etc, nothing works. This is the error message I'm getting (in Swedish):


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MacBook Pro (15-inch, 2018), macOS High Sierra (10.13.6)

Posted on Sep 24, 2018 12:20 PM

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Posted on Sep 29, 2018 2:01 AM

It seems that many people have gotten confirmation from Apple that this is an issue with the T2 chip.


I would STRONGLY advice you to stay on whatever OS you are running now, do NOT try to install Mojave or reinstall the OS you are running. Even the people who have gotten it to work are experiencing several bugs with Mojave. If I were you, I would wait until Apple releases a patch for the OS so that it works with the new MBP:s. Thanks for all the insight everyone!

480 replies

Nov 2, 2018 11:59 AM in response to iFrog41

Here you go IFrog. Thanks. It was Quirkz and appleuser.


User uploaded filedmauchOct 12, 2018 3:46 PM in response to picklebreath

User uploaded file Level 1 (18 points)


Oct 12, 2018 3:46 PM Re: Problems upgrading to macOS Mojave on MacBook Pro 2018in response to picklebreath

Quirkz and the appleuser on another thread get the credit, not I. I simply tried it out, refined their posted instruction a bit and it worked. It is THEY who get the credit and thanks, not I. So happy for you to end off a long week!

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Nov 2, 2018 12:15 PM in response to dmauch

Good deal, What I am really happy about seeing is, many of the people here who were initially fuming at apple, and each other one the problems, have learned how to solve the issues, and have been able to upgrade and move on. Yes there are still one or two here that haven't resolved their issues yet, but the number of successes vs failures is growing larger. Funny, after the uproar with Robin, I've not seen him post again in here for a while.

Nov 2, 2018 12:41 PM in response to iFrog41

The truth be known iFrog — The fix was first posted on a thread entiled “Mojave login UI sluggish and laggy” started by removetxtforward. When Quirkz first posted the fix and it worked, I copied and reposted to this thread. In the meantime it created a lot of chatter over on removetxtforward’s thread so much so that he requested that we take our fix elsewhere since it didn’t address his particular issue. It got to a point where he referred to me as a “dou—-bag spammer,” after I tried explaining that the fix was helping a lot of people regardless of his thread’s original subject. Apple subsequentry “unauthorized “ me from posting any further content on his thread. So be it.

Nov 23, 2018 11:16 PM in response to Kladdy

I have an iMac 2015. The processor is a 3.3 Ghz Intel Core i5. I have successfully installed Mojave on this iMac and on a MBP. However, if I turn the iMac off, it will not boot to anything (including multiple backups). Instead, I have to reinstall Mojave with the command R keys. I have now reinstalled Mojave 4 times. And, I have now given up and bought a new machine because Apple Care expired on the 2015 iMac, and who knows how much a repair would cost. It is also nice to know that Apple will not take this machine in as a trade in. It must be too old! I am so stuck in the Apple ecosystem on so many levels that it would be months of pain to extricate myself and the entire house from Apple. If I could do so, I would and run back to a PC. There, the failures are predictable and not ridiculous such as with Apple, and I wouldn't be shelling out nearly $4,000 for a new machine with Apple Care. Apple is not interested in computers any longer; it has moved on to bigger and better things.

Nov 24, 2018 2:58 AM in response to Steven in NYC

Hi Steven, sorry to hear you didn't have a good experience with Mojave, and your iMac. I have the same iMac model, and Mojave has worked nearly flawlessly. I have a 2TB Fusion drive, and that has also worked perfectly with APFS under Mojave. I also understand about feeling stuck in the Apple ecosystem. For me, it's mainly software holding me here. Sorry to hear that you went through the trouble of buying a whole new machine, just to fix what would probably an easy problem. I hope the new machine works out for you well.


Also, even though this is the Apple Community, I wouldn't blame you, or hold it against you if you did decide to switch at some point. I've been looking at other options besides Apple as well. Have a great day!

Jan 31, 2019 12:37 AM in response to Kladdy

Apple supervisor said i must I upgrade El Capitan to Mojave (not beta)

I downloaded Mojave installer but it won't install

i tried to uninstall--no luck. Then I moved it to Trash,& got this message:

'Mojave can't be moved to trash because it's currently in use'

What? Thousands upon thousands of complaints are lodged about this new OS--it's inconceivable this hasn't been corrected yet




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Problems upgrading to macOS Mojave on MacBook Pro 2018

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